The current issue of IRW arrived last week to subscribers. Look what non-subscribers missed:.

Featuring article: Subnetting and Security

“The purpose of subnetting is to break large networks into smaller networks called subnets by borrowing bits from the network portion of an IP address. This is done by using a variable length subnet mask. As the IP addresses of host computers on each subnet are masked by the network address these are invisible to those outside the network. In this sense, subnetting benefits security. Conversely, the cost of misconfigured subnets creates Internet vulnerabilities. For those working at the intersection of Information Security, IP address masking and subnetting might be relevant when it comes to analyzing spoofing, penetration hacking, and subnet advertisements. Accordingly, in this issue of the newsletter we present a straightforward approach on the art of subnetting.”

Enjoy it.